Does going from stock 18 rims to stock 20 rims require a dealership visit? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Medic726 · 07-18-2011, 05:07 PM

I'm going from the stock 18's to stock 20's rims and tires. I called the dealership today to schedule an appointment and they wouldn't do it unless I allowed them to "reprogram" the car to work with the 20's. Of course this was at an extra 100$ cost to me. They claim that if I do not do this "reprogram" I will get ABS lights, traction control lights, and check engine lights. Now I've swapped out rims and tires on other cars and never heard this before. I figured my spedo would be off a bit and that was it. Anyone have any input on this...or is this just a shady dealership tactic to get my money?

REDXIIIDave · 07-18-2011, 05:10 PM

Sounds like BS to me. The stock 20s with tires should be the same diameter as the stock 18s with tires.

CamaroJim56 · 07-18-2011, 05:51 PM

I'd call another dealer and check. Keep those old rims for snow tires!

smokingcamaro · 07-18-2011, 06:43 PM

I also went from the 18s LS rims to the stock 20's SS and I have no problems at all, I even had a mechanic buddy ride with to make sure that i did not a Balance or anything else and it is all good smooth as silk and no lights they are feeding you a bunch of BS. BTW I like your Camaro!!!!

christianmotox · 07-18-2011, 06:50 PM

Youre dealer is a ripoff, The overall diameter of both are the same. The only think they would need to program are the TPMS, but you can do that for free using the cars DIC, The procedure is explained on the manual.

Also you need to make sure the 20" youre installing have TPMS already installed in them.

Good Luck.

OUR72GTO · 07-18-2011, 06:53 PM

I switch back and forth each winter /summer.

Sir Nuke · 07-18-2011, 06:56 PM

well you know......everybody before me already said it.....AND THEY ARE RIGHT.....Start using another dealer/service department, I don't care how far away the next one is....I wouldn't give them a dime of your money....EVER!!

DraggnFrameGMC · 07-18-2011, 07:09 PM

Stock 18" 28.61"
Stock 20" 28.68" Front
Stock 20" 28.66" Rear

No reprogramming needed. They just want your money.

Medic726 · 07-18-2011, 07:14 PM

Thanks for the input...i was already calling BS on the reprogramming just wanted to be 100% sure. Gonna have the tires put on by the local auto shop for 30$ and program the tpms myself. Can't wait to see how it looks with the midnight silver 20's! hopefully I can get it taken care of this weekend.

billy2642 · 07-18-2011, 07:25 PM

I swapped my 18's to 20in wheels and put the stock 20 tires sizes on them and if Im doing 70 on my speedo, according to GPS Im doing 72 so Im thinking your dealer is full of it.

smokingcamaro · 07-18-2011, 07:28 PM

Quote:

Originally Posted by billy2642

I swapped my 18's to 20in wheels and put the stock 20 tires sizes on them and if Im doing 70 on my speedo, according to GPS Im doing 72 so Im thinking your dealer is full of it.

For some reason my GPS are says I am going 1-2 MPH Faster then what I am really doing even with the stock tires!!

=Stephens= · 07-18-2011, 07:30 PM

I put 20's on mine and I read my speedo at 60 and I am really doing 58 according to my GPS.

billy2642 · 07-18-2011, 07:32 PM

Yeah. Im sure my speedo is acually correct. I was just saying that to prove the OP dealer is full of BS and trying to rob his money for nothing

JustMikeB · 07-19-2011, 10:08 AM

I'm guessing the only thing you won't get is the speed limiter bumped up. The 20's have a higher speed rated tire than the 18's.
It only really matters if you want to go faster than 118.

07-18-2011, 05:07 PM	#1
Medic726 Drives: 2020 Camaro convertible RS Auto Join Date: Feb 2010 Location: Illinois Posts: 887 View My Garage	Does going from stock 18 rims to stock 20 rims require a dealership visit? I'm going from the stock 18's to stock 20's rims and tires. I called the dealership today to schedule an appointment and they wouldn't do it unless I allowed them to "reprogram" the car to work with the 20's. Of course this was at an extra 100$ cost to me. They claim that if I do not do this "reprogram" I will get ABS lights, traction control lights, and check engine lights. Now I've swapped out rims and tires on other cars and never heard this before. I figured my spedo would be off a bit and that was it. Anyone have any input on this...or is this just a shady dealership tactic to get my money?

07-18-2011, 06:53 PM	#6
OUR72GTO 2010 SIM Beige RS 6M Drives: SIM RS 6M 66 Corvair Silverado LTZ Join Date: Oct 2008 Location: Kamloops,British Columbia Posts: 4,677	I switch back and forth each winter /summer. __________________ CAMARO.. 2010 The Heart Beat is back in CHEVROLET Now let's put it back in America

07-18-2011, 06:56 PM	#7
Sir Nuke Master of All Things Drives: '20 Corvette Stingray Join Date: Jul 2009 Location: Southeast of Houston, Texas Posts: 22,330 View My Garage	well you know......everybody before me already said it.....AND THEY ARE RIGHT.....Start using another dealer/service department, I don't care how far away the next one is....I wouldn't give them a dime of your money....EVER!! __________________

07-18-2011, 07:25 PM	#10
billy2642 Drives: 2013 VR ZL1 Manual Join Date: Jun 2011 Location: Columbus, GA/Phenix City, AL Posts: 173	I swapped my 18's to 20in wheels and put the stock 20 tires sizes on them and if Im doing 70 on my speedo, according to GPS Im doing 72 so Im thinking your dealer is full of it. __________________ 2013 VR ZL1 Manual #0801. Airais CAI, More to come........

07-18-2011, 07:32 PM	#13
billy2642 Drives: 2013 VR ZL1 Manual Join Date: Jun 2011 Location: Columbus, GA/Phenix City, AL Posts: 173	Yeah. Im sure my speedo is acually correct. I was just saying that to prove the OP dealer is full of BS and trying to rob his money for nothing __________________ 2013 VR ZL1 Manual #0801. Airais CAI, More to come........

07-18-2011, 05:10 PM	#2
REDXIIIDave El Chupacabra Drives: 2011 2SS/RS A6 Black/Black Join Date: Jun 2011 Location: Lakewood, CO Posts: 923	Sounds like BS to me. The stock 20s with tires should be the same diameter as the stock 18s with tires.

07-18-2011, 05:51 PM	#3
CamaroJim56 Obsessed Drives: 2016 Hyper Blue 2SS RS Join Date: Jun 2011 Location: Riverview, FL Posts: 2,603	I'd call another dealer and check. Keep those old rims for snow tires!

07-18-2011, 06:43 PM	#4
smokingcamaro Drives: 2010 Camaro LS Join Date: Dec 2010 Location: Charlotte,NC Posts: 394 View My Garage	I also went from the 18s LS rims to the stock 20's SS and I have no problems at all, I even had a mechanic buddy ride with to make sure that i did not a Balance or anything else and it is all good smooth as silk and no lights they are feeding you a bunch of BS. BTW I like your Camaro!!!!

07-18-2011, 06:50 PM	#5
christianmotox Drives: ( . )( . ) Join Date: Feb 2010 Location: San Diego, CA Posts: 2,827	Youre dealer is a ripoff, The overall diameter of both are the same. The only think they would need to program are the TPMS, but you can do that for free using the cars DIC, The procedure is explained on the manual. Also you need to make sure the 20" youre installing have TPMS already installed in them. Good Luck.

07-18-2011, 07:09 PM	#8
DraggnFrameGMC Drives: 2011 Synergy Green Camaro LT Join Date: Jul 2011 Location: Lakeland, FL Posts: 830	Stock 18" 28.61" Stock 20" 28.68" Front Stock 20" 28.66" Rear No reprogramming needed. They just want your money.

07-18-2011, 07:14 PM	#9
Medic726 Drives: 2020 Camaro convertible RS Auto Join Date: Feb 2010 Location: Illinois Posts: 887 View My Garage	Thanks for the input...i was already calling BS on the reprogramming just wanted to be 100% sure. Gonna have the tires put on by the local auto shop for 30$ and program the tpms myself. Can't wait to see how it looks with the midnight silver 20's! hopefully I can get it taken care of this weekend.

07-18-2011, 07:30 PM	#12
=Stephens= Drives: 2011 LS Join Date: Feb 2011 Location: Kearney, Nebraska Posts: 3,541 View My Garage	I put 20's on mine and I read my speedo at 60 and I am really doing 58 according to my GPS.

07-19-2011, 10:08 AM	#14
JustMikeB Drives: 2010 1LT IBM Join Date: Apr 2010 Location: Granbury, TX Posts: 20 View My Garage	I'm guessing the only thing you won't get is the speed limiter bumped up. The 20's have a higher speed rated tire than the 18's. It only really matters if you want to go faster than 118.

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